Thanks for all the feedback. I appreciate it. I have a new UI in the works that I'm hoping will fix a few of your points. I didn't really put any thought into a leaderboard before, but now that you say it, it does sound like a good idea. It'd be neat to have something to see how high of a score people can achieve.
Regarding the power ups/jokers, thats already in the plans, not sure when though, I want to get everything else buttoned up before tacking on that new feature.